Effect of 1-MCP on Delaying the Senescence of Broccoli and Its PossiblePhysiological Mechanism

ACTA HORTICULTURAE SINICA ›› 2004, Vol. 31 ›› Issue (2): 205-209.

• 研究论文 • Previous Articles Next Articles

Effect of 1-MCP on Delaying the Senescence of Broccoli and Its PossiblePhysiological Mechanism

Wang Qiaomei;Guo Deping;Kyikyi Win; Yuan Jing

(Department of Horticulture，Zhejiang University,Hangzhou 310029，China)

Received:2003-10-20 Revised:2004-01-13 Online:2004-04-25 Published:2004-04-25

Abstract

Abstract: The effect of 1-methylcyclopropene (1-MCP) on the senescence of broccoli was studied．The results showed that the shelf life of broccoli was extended and the degradations of chlorophyl 1-carotenoid and vitamin C delayed by exposure to 1-MCP at concentration range of 0—20 µL/L for 6 h at room temperature (20 ℃)followed by storage at 20 ℃ 1-MCP at optimal concentration of 2．5 µL/L was used to investigate the possible mechanism of 1-MCP in delaying the senescence． The respiration rate and ethylene production of florets were inhibited, the protein content of florets， the activities of SOD and CAT increased， while the MDA content and the activity of POD decreased during storage by exposure to 2．5 µL/L 1-MCP．SDS-PAGE analysis further showed that the composition and content of both the alcohol-soluble and water-soluble proteins changed after 1-MCP treatment．

Key words: Broccoli, 1-methylcyclopropene, Storage, Senescence, Protein, SDS-PAGE

CLC Number:

S635

Wang Qiaomei;Guo Deping;Kyikyi Win;Yuan Jing. Effect of 1-MCP on Delaying the Senescence of Broccoli and Its PossiblePhysiological Mechanism[J]. ACTA HORTICULTURAE SINICA, 2004, 31(2): 205-209.

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Effect of 1-MCP on Delaying the Senescence of Broccoli and Its PossiblePhysiological Mechanism

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